Ultra-wide band electromagnetic wave absorption by decorating the magnetic particles on two-dimensional Ti3C2Tx

IF 11 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY Rare Metals Pub Date : 2025-01-21 DOI:10.1007/s12598-024-03170-1

Tong hui Li, Lin Ma, Li Wang, Hai bo Wang, Bo Li, Meng yao Han, Diao feng Li, Chun guang Bai, Ming dong Dong, Long hai Shen, Song Ma, Feng Qi

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Abstract

The single-layer Ti₃C₂T_x/MXene has become a special electromagnetic wave absorber near the terahertz band because of its abundant surface groups and excellent conductivity. However, the macro-preparation of single-layer Ti₃C₂T_x/MXene shows significantly difficult to influence its application. The two-dimensional Ti₃C₂T_x is easily prepared to have high production, but its weak absorption ability due to high surface conductivity also restricts its application. To realize the strong electromagnetic wave absorption of two-dimensional Ti₃C₂T_x/MXene, a new strategy with magnetic FeNi nanoparticles decorating Ti₃C₂T_x/MXene composites (FeNi-Ti₃C₂T_x) were proposed and the effective electromagnetic wave absorption features covering 170–220 GHz that means the absorption band width reach 50 GHz. With an absorber composite film thickness being only 0.6 mm, the absorptivity of the composite is enhanced with the increase of decorating FeNi nanoparticles and promote up to 75% when the FeNi nanoparticles loading content reaches 30 wt%. The improvement of absorption is attributed to the introduction of soft magnetic FeNi to adjust the high surface conductivity of MXene and improve the electromagnetic balance of the absorber.

Graphical abstract

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二维Ti3C2Tx表面修饰磁粒子的超宽带电磁波吸收

单层Ti3C2Tx/MXene由于其丰富的表面基团和优异的导电性，已成为一种特殊的太赫兹波段电磁波吸收材料。而单层Ti3C2Tx/MXene的宏观制备对其应用具有明显的影响。二维Ti3C2Tx易于制备，产量高，但由于其表面电导率高，吸收能力弱，也制约了其应用。为了实现二维Ti3C2Tx/MXene的强电磁波吸收，提出了用磁性FeNi纳米粒子修饰Ti3C2Tx/MXene复合材料（FeNi-Ti3C2Tx）的新策略，其有效电磁波吸收特征覆盖170 ~ 220 GHz，即吸收带宽达到50 GHz。在吸收膜厚度仅为0.6 mm的情况下，随着装饰FeNi纳米颗粒的增加，复合材料的吸收率提高，当FeNi纳米颗粒负载量达到30 wt%时，吸收率提高到75%。吸收率的提高是由于引入了软磁FeNi来调节MXene的高表面导电性，改善了吸收体的电磁平衡。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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阿拉丁

Iron sulfate heptahydrate (FeSO4·7H2O)

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Lithium fluoride (LiF)

来源期刊

Rare Metals 工程技术-材料科学：综合

CiteScore

12.10

自引率

12.50%

发文量

2919

审稿时长

2.7 months

期刊介绍： Rare Metals is a monthly peer-reviewed journal published by the Nonferrous Metals Society of China. It serves as a platform for engineers and scientists to communicate and disseminate original research articles in the field of rare metals. The journal focuses on a wide range of topics including metallurgy, processing, and determination of rare metals. Additionally, it showcases the application of rare metals in advanced materials such as superconductors, semiconductors, composites, and ceramics.